Article
Chemistry, Physical
Sen Lin, Yanan Pan, Jianglong Du, Yong Yang, Haiping Su, Jianguo Yu
Summary: This study investigates the correlation between interlayer water and Li+ adsorption performance in high Mg2+/Li+ ratio brines by designing Li/Al-LDHs with different interlayer water contents. The results show that the Li+ adsorption capacity of Li/Al-LDHs is positively correlated with the interlayer water content in high Mg2+/Li+ ratio brines. The interlayer water content does not affect the structure stability of Li/Al-LDHs, but it does affect the interlayer spacing and adsorption selectivity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Md Mominul Islam, Abdullah Al Maruf, Jyotshna Pokharel, Yue Zhou
Summary: A novel superhalogen-based double antiperovskite solid-state electrolyte, Li6OS(BH4)(2), has been successfully synthesized and demonstrated excellent cyclic performance and long lifespan. It has a large bulk modulus and wide electronic bandgap, making it a competitive candidate for solid-state electrolyte in Li-ion battery applications.
MRS COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Tzu-Yang Huang, Matthew J. Crafton, Yuan Yue, Wei Tong, Bryan D. McCloskey
Summary: This study deconvolutes the mixed redox processes in a Ni-based DRX material, revealing a much lower Ni oxidation efficiency than initially designed due to the competition of oxygen redox. The chemical approach presented in this work and its future extension can resolve and quantify various mixed redox processes in different DRX, allowing clear correlations among material design, deconvoluted redox capacities, and battery performance.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Physical
Zhenlu Yu, He Huang, Yunjian Liu, Xingyu Qu, Yu Zhou, Aichun Dou, Mingru Su, Hong-Hui Wu, Liang Zhang, Kehua Dai, Zaiping Guo, Tao Wan, Mengyao Li, Dewei Chu
Summary: Li-excess cation-disordered oxide cathodes with high energy density have attracted attention. In this study, it was found that carbon/Al2O3 double coating and partial Al3+ substitution can enhance the capacity and cycling performance of Ni-based cation-disordered oxide cathodes. Carbon coating promotes O redox activity, while Al3+ substitution shortens the band overlap between Ni and O. Additionally, Al2O3 coating and Al3+ doping improve the cycling stability of the cathode material.
Review
Oncology
Yang Feng, Yahui Feng, Liming Gu, Pengfei Liu, Jianping Cao, Shuyu Zhang
Summary: BH4 plays a key role in modulating cellular radiosensitivity by affecting the production of nitric oxide and oxygen free radicals. Its metabolism can influence the efficacy of radiotherapy in both tumor cells and normal tissues.
FRONTIERS IN ONCOLOGY
(2021)
Article
Chemistry, Physical
Yanli Chen, Ziqi Xie, Qianqian Lv, Nuo Zhu, Shengyu Shang, Ning Wang, Yongcheng Jin, Wenchao Yan
Summary: The Li deficiencies and the ratio of Ni/Co/Mn regulate the content of Li-O-Li configuration and the types of Li-O-TM configuration. The modified Li-rich materials with spinel structure and crystal defects showed enhanced structural stability. Increasing the ratio of Ni/(Co+Mn) further enhanced the electron contribution and electronic conductivity. The LR1.8-811 sample demonstrated outstanding cycling performance and energy density due to its lower content of Li-O-Li and higher content of Li-O-Ni, mitigating oxygen redox and enhancing structural stability.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Jiaguang Zheng, Xuancheng Wang, Xuezhang Xiao, Hao Cheng, Liuting Zhang, Lixin Chen
Summary: Introducing K2TiF6 and K2NbF7 into Mg(BH4)(2) effectively lowers the dehydrogenation temperature, increases hydrogen release, and improves dehydrogenation kinetics. Additionally, K2TiF6 as a catalytic precursor reacts with Mg(BH4)(2) to form active hydrides, facilitating the regeneration of Mg(BH4)(2).
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Veselina M. Georgieva, Elliott L. Bruce, Ruxandra G. Chitac, Magdalena M. Lozinska, Anna M. Hall, Claire A. Murray, Ronald Smith, Alessandro Turrina, Paul A. Wright
Summary: The study investigated various forms of merlinoite zeolites and found that the narrow-pore structures formed during dehydration exhibit cooperative adsorption behavior towards CO2, with the pressure and adsorption rate depending on the replacement of different metal ions and the changes in unit cell structure.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Anand Rajkamal, Hern Kim
Summary: The higher Ni content with less cobalt usage in lithium nickel cobalt manganese oxide cathode materials results in higher power rating and energy density in lithium-ion batteries. Cation doping effectively suppresses the mixing of Ni ions in the lithium layer. Different cationic dopants have varying effects on the structural stability and performance of the cathode material.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Eunryeol Lee, Tae-Ung Wi, Jaehyun Park, Sang-Wook Park, Min-Ho Kim, Dae-Hyung Lee, Byung-Chun Park, Chiho Jo, Rahul Malik, Jong Hoon Lee, Tae Joo Shin, Seok Ju Kang, Hyun-Wook Lee, Jinhyuk Lee, Dong-Hwa Seo
Summary: Understanding the local cation order in crystal structures and its correlation with electrochemical performances is important for developing high-energy Mn-rich cathode materials for Li-ion batteries. The engineering of local cation order has been shown to improve Li-transport rate and enhance cycling stability of the cathodes.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Sanghamitra Moharana, Geoff West, Marc Walker, Xinjie S. Yan, Melanie Loveridge
Summary: The addition of KPF6 in the electrolyte can promote the formation of a robust SEI layer, effectively inhibiting the growth of Li dendrites. The KPF6 additive can form a thin and durable SEI layer rich in LiF, which blocks the electron leakage pathways. Additionally, KPF6 additive can reside at defect sites, hindering the incoming of Li+ and restricting the growth of Li dendrites. Optimizing the electrode/electrolyte interphase by controlling the concentration of additives has implications for fast charging.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Eyob Belew Abebe, Chun-Chen Yang, She-Huang Wu, Wen-Chen Chien, Ying-Jeng James Li
Summary: In this study, nickel-rich layered oxide cathode materials were modified by adding a specific amount of lithium excess, resulting in improved electrochemical performance such as enhanced discharge capacity retention and rate capability. The optimal lithium excess in the NCM90 cathode materials showed potential for use in next-generation lithium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Electrochemistry
Reona Miyazaki, Hiromitsu Asai, Takehiko Hihara
Summary: This study investigates the tolerance of Li plating-stripping cycles in Li+/Na+ mixed solid electrolyte using Li/Li symmetric cells fabricated with different electrolytes. The results show that LiI electrolyte has poor tolerance, while 2LiI.LiBH4 electrolyte exhibits better tolerance. The propagation of Li in NaI-NaBH4-LiI electrolyte differs from the other two electrolytes.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Peng Xiao, Wenhao Li, Shuai Chen, Gang Li, Zhongjia Dai, Mengdan Feng, Xu Chen, Wensheng Yang
Summary: In this study, LiNi0.8Co0.15Al0.05O2 cathode material with a regular crystal structure was successfully prepared through oxygen pressurization. The combination of oxygen pressure and calcination temperature effectively improved the electrochemical performance of Ni-rich materials by reducing cation mixing and oxygen vacancies, as well as suppressing microcrack formation.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Peiyu Hou, Maosheng Gong, Yuhang Tian, Feng Li
Summary: Increasing the nickel content in layered cathodes can enhance the energy density of lithium-ion batteries. However, the phase transition of nickel leads to structural degradation and diminished electrochemical performance. This study reveals that doping Nb5+ in the Li layer is more favorable than doping it in the Ni and Co layers, but less favorable than doping it in the Mn layer. Therefore, Nb5+ doping is preferred in Mn-free cathodes.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
